Basically, Cruz destroyed his political viability by lying about Ben Carson's departure during the Iowa Primary.
Cruz never said anything about Carson leaving the campaign. First CNN did then his campaign manager sent info to some precinct captains and Rep.Steven King tweeted it out. Cruz didn't know a thing about it before that. Neither did Trump but that didn't stop him from branding Cruz a liar. Trump was the one lying. But you likely know all that and just can't stop lying yourself.
